Bidspirit auction | A Roman magical double sided

A Roman magical double sided bloodstone intaglio. A vase into an ouroboros with inscriptions. - A Roman magical double sided bloodstone intaglio. A vase into an ouroboros with inscriptions. In the center, a crater, surrounded by an ouroboros, symbol of perpetual time. On the reverse, magical inscriptions. 2nd-3rd century A.D. 10 x 14 x 3 mm